#81A473

CSS

:root {
  --garden-of-eden: #81a473;
  --garden-of-eden-rgb: 129 164 115;
  --garden-of-eden-oklch: oklch(0.68 0.08 136.9);
}

.element {
  color: var(--garden-of-eden);
  background-color: hsl(103 21% 55%);
  border-color: oklch(0.68 0.08 136.9);
}

Tailwind CSS v4

@theme {
  --color-garden-of-eden: #81a473;
  --color-garden-of-eden-50: #eafbe5;
  --color-garden-of-eden-100: #dbefd5;
  --color-garden-of-eden-200: #c3ddbc;
  --color-garden-of-eden-300: #a3c29b;
  --color-garden-of-eden-400: #88aa7b;
  --color-garden-of-eden-500: #6d935d;
  --color-garden-of-eden-600: #5c7c50;
  --color-garden-of-eden-700: #4a633f;
  --color-garden-of-eden-800: #36492c;
  --color-garden-of-eden-900: #25321e;
  --color-garden-of-eden-950: #141e0e;
}

SCSS

$garden-of-eden: #81a473;
$garden-of-eden-rgb: 129, 164, 115;
$garden-of-eden-light: mix(#fff, $garden-of-eden, 20%);
$garden-of-eden-dark: mix(#000, $garden-of-eden, 20%);

.element {
  color: $garden-of-eden;
  box-shadow: 0 0 0 2px rgba($garden-of-eden, 0.35);
}